{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x39f1200d1ba99149b7cea148ab79de00e0ce709ef57d7de6008e17bdadd47c56",
    "signature": "0x51d9cabac44dcaac2dfaf93ed18172c4ba20503d1662dbf51dd87bd4f000e43b04f4c9a30c20f5500cc0aa7449bf40df38d99f463075c3af153ca3e2aff7e7e01c",
    "signer": "0x61759FD9d69b6C29FE84fc39eaB6C50Cf7dCd8FC",
    "userId": "366953361"
  }
}